package com.gwm.cloudcommon.config;


import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;

import java.util.ArrayList;
import java.util.List;

@Configuration
public class JsonConfig {
    @Bean
    public HttpMessageConverters fastJsonHttpMessageConverters() {
        //1、定义一个convert转换消息的对象
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
        //2、添加fastjson的配置信息
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
        // WriteMapNullValue把空的值的key也返回
        fastJsonConfig.setSerializerFeatures(SerializerFeature.WriteMapNullValue);

        //3、在convert中添加配置信息
        fastConverter.setFastJsonConfig(fastJsonConfig);
        //4、将convert添加到converters中
        HttpMessageConverter<?> converter = fastConverter;

        //解决中文乱码问题

        List<MediaType> fastMediaTypes = new ArrayList<>();

        fastMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);

        fastConverter.setSupportedMediaTypes(fastMediaTypes);

//     //3、在convert中添加配置信息.

        fastConverter.setFastJsonConfig(fastJsonConfig);

        return new HttpMessageConverters(converter);
    }
}
